Rustic cleanups, dedups and making the code less hard to read in general (#251)

* typos :help_me:

* (part 1/?) massive cleanup to make the code more Rust-ic and cut down heap allocations.

* (part 2/?) massive cleanup to make the code more Rust-ic and cut down heap allocations.

* (part 3/?) cut down some pretty major heap allocations here - more Bytes and BytesMuts, less Vec<u8>s

also I don't really understand why you need to `to_vec` when you don't really use it again afterwards

* (part 4/?) deduplicate error handling in backblaze logic

* (part 5/?) fixes, cleanups, refactors, and reformatting

* (part 6/?) cleanups and refactors

* remove loads of `as_str` in types that already are `Display`

* Revert "remove loads of `as_str` in types that already are `Display`"

This reverts commit 4f974310cfb167ceba03001d81388db4f0fbb509.

* reformat and move routes util to the util module

* use streams

* Run prepare + formatting issues

Co-authored-by: Jai A <jaiagr+gpg@pm.me>
Co-authored-by: Geometrically <18202329+Geometrically@users.noreply.github.com>

src/file_hosting/mod.rs

@@ -6,6 +6,7 @@ mod mock;
 mod s3_host;
 
 pub use backblaze::BackblazeHost;
+use bytes::Bytes;
 pub use mock::MockHost;
 use s3::creds::AwsCredsError;
 use s3::S3Error;
@@ -51,7 +52,7 @@ pub trait FileHost {
         &self,
         content_type: &str,
         file_name: &str,
-        file_bytes: Vec<u8>,
+        file_bytes: Bytes,
     ) -> Result<UploadFileData, FileHostingError>;
 
     async fn delete_file_version(